/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.editor;

import proguard.classfile.attribute.*;
import proguard.util.ArrayUtil;

/**
 * This class can add local variables to a given local variable table attribute. Local variables to be added must have
 * been filled out beforehand.
 *
 * @author Eric Lafortune
 */
public class LocalVariableTableAttributeEditor {
    private final LocalVariableTableAttribute targetLocalVariableTableAttribute;

    /**
     * Creates a new LocalVariableTableAttributeEditor that will edit local variables in the given local variable table
     * attribute.
     */
    public LocalVariableTableAttributeEditor(LocalVariableTableAttribute targetLocalVariableTableAttribute) {
        this.targetLocalVariableTableAttribute = targetLocalVariableTableAttribute;
    }

    /**
     * Adds a given line number to the line number table attribute.
     */
    public void addLocalVariableInfo(LocalVariableInfo localVariableInfo) {
        targetLocalVariableTableAttribute.localVariableTable =
            (LocalVariableInfo[])ArrayUtil.add(targetLocalVariableTableAttribute.localVariableTable,
                targetLocalVariableTableAttribute.u2localVariableTableLength++, localVariableInfo);
    }
}